20741920

素因数分解:

$2^5\times 5^1\times {\mathrm{19}}^1\times {\mathrm{6823}}^1$

素因数の和:6857

約数の個数: 48

約数和(自身を含む): 51589440

約数和(自身を除く): 30847520

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 32, 38, 40, 76, 80, 95, 152, 160, 190, 304, 380, 608, 760, 1520, 3040, 6823, 13646, 27292, 34115, 54584, 68230, 109168, 129637, 136460, 218336, 259274, 272920, 518548, 545840, 648185, 1037096, 1091680, 1296370, 2074192, 2592740, 4148384, 5185480, 10370960, 20741920]

約数ペア:

[(1, 20741920), (2, 10370960), (4, 5185480), (5, 4148384), (8, 2592740), (10, 2074192), (16, 1296370), (19, 1091680), (20, 1037096), (32, 648185), (38, 545840), (40, 518548), (76, 272920), (80, 259274), (95, 218336), (152, 136460), (160, 129637), (190, 109168), (304, 68230), (380, 54584), (608, 34115), (760, 27292), (1520, 13646), (3040, 6823)]